|Year|Title|Peak chart positions AUS|Peak chart positions NZ|Peak chart positions UK|Album|
|---|---|---|---|---|---|
|1981|"Stand Up"|-|—|-|Triffids Sixth|
|1982|"Spanish Blue"|—|—|—|Single-only release|
|1984|"Beautiful Waste"|—|—|—|Single-only release|
|1985|"You Don't Miss Your Water"|—|—|—|Single-only release|
|1986|"Wide Open Road"|64|—|26|Born Sandy Devotional|
|1987|"Bury Me Deep in Love"|48|34|—|Calenture|
|1988|"Trick of the Light"|77|—|73|Calenture|
|1988|"Holy Water"|—|—|—|Calenture|
|1989|"Goodbye Little Boy"|81|—|—|The Black Swan|
|1989|"Falling Over You"|—|—|—|The Black Swan|
|2007|"Save What You Can"|—|—|—|Promotional release|

Question: how many promotional releases were there?
Answer: 1